Can a script be made to merge all the Venue xmls in the s3_road folders so we can see how all the tracks look together without terrain? I’m assuming those tracks in s3_road remain as they are up to join_all...Is that correct?

Lately I’m having trouble getting the heights of the detours to match the main track. I notice in your projects you are able to get the heights to match near perfectly. How do you manage that?

Here is a preview of a track I just started where I used 3 meter elevation data. I thought for sure the heights would match using the best elevation data possible with dar_altura(5,0.5,-0.5,5), but obviously it doesn’t. This did not bother me in the past because I used very few detours and could rectify by hand in btb. Having 20+ detours is becoming rather time consuming adjusting all the tracks to get close. I'm not expecting perfect but in someplace the height separation can be far.

Red is a drivable track that loops back to the “main” track. Clearly the height between the two does not match at that point…And where they merge in the image is a very flat section. I’m confused…

I believe the difference is really small (1/2 meter?).Perhaps main track nodes are far from the detour and a little Y angle (elevation angle) shift makes the road go down a few cm far away from the nodes.

In the image I appreciate the main road has a "valley" in that zone and may be it shouldn't. The Y angle of the left side node seems to be the problem

As you can see the problem is not the elevation of the nodes, but the Y angle of one of them. Why this angle is negative and creates a valley? I don't know, but it is supposed to be because terrain elevation goes down. Perhaps the road is not exactly positioned relative to elevation data?Manually changing the angle the 2 roads have almost the same elevation at the detour, as can be seen.

Using a too big parameter for btb06 can also lead to small unreal elevation changes, as creartrack1 takes elevation from the borders of the road, not from its centerline